@@ -320,6 +320,46 @@
};
};
+ /* STMPE811 touch screen controller */
+ stmpe811@41 {
+ compatible = "st,stmpe811";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x41>;
+ interrupts = <TEGRA_GPIO(V, 0) IRQ_TYPE_LEVEL_LOW>;
+ interrupt-parent = <&gpio>;
+ interrupt-controller;
+ id = <0>;
+ blocks = <0x5>;
+ irq-trigger = <0x1>;
+
+ stmpe_touchscreen {
+ compatible = "st,stmpe-ts";
+ reg = <0>;
+ /* 3.25 MHz ADC clock speed */
+ st,adc-freq = <1>;
+ /* 8 sample average control */
+ st,ave-ctrl = <3>;
+ /* 7 length fractional part in z */
+ st,fraction-z = <7>;
+ /*
+ * 50 mA typical 80 mA max touchscreen drivers
+ * current limit value
+ */
+ st,i-drive = <1>;
+ /* 12-bit ADC */
+ st,mod-12b = <1>;
+ /* internal ADC reference */
+ st,ref-sel = <0>;
+ /* ADC converstion time: 80 clocks */
+ st,sample-time = <4>;
+ /* 1 ms panel driver settling time */
+ st,settling = <3>;
+ /* 5 ms touch detect interrupt delay */
+ st,touch-det-delay = <5>;
+ };
+ };
+
/*
* LM95245 temperature sensor
* Note: OVERT_N directly connected to PMIC PWRDN
Activate STMPE811 touch controller as found on Colibri T30 modules. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> --- arch/arm/boot/dts/tegra30-colibri.dtsi | 40 ++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+)